Gulf Coast Oil

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FILE - In this July 1, 2017 file photo, Isabel Osorio Luna, the great-grandmother of the murdered Martinez children, walks past homemade concrete crosses being painted to adorn the simple tombs of the family of six, in Coatzacoalcos, Veracruz State, Mexico. In the Gulf Coast oil city of Coatzacoalcos, in southern Veracruz, state Gov. Miguel Angel Yunes said the slaying of a top gunman in late June prompted the Zetas to kill the entire Martinez family: Clemente; his wife Martimana; 10-year-old Jocelin; Victor Daniel, 8; Angel, 6; and Nahomi, 5.(AP Photo/Rebecca Blackwell, File)